Out of curiosity, I linked my 360 to the Xbox 1 via the HDMI.
well it does work, mostly…
I dont know if it was just me but the graphics appeared smoother and more refined…but
the event list race i was in seemed a little glitchy, the flow of the image seemed a little lagged at times, but other than that it was alllriiight 
Have any of you guys linked yours?, and tell me whatcha think?
i was running through a 1080p native tv
Thanks and Peace Guys!